You are going to have to leave your comfort zone on this one. Walnut is "brown", you have "pink" as a counter top. I would suggest going with another version of the colours already in the room. you have gray/beige and white. I would hesitate going white...but it can be done. You can move into the grays and be very happy (it would look very modern) or you can move into a beige that holds a hint of pink in it (not pink...but a blush of warmth). Or you could go really wonky and add in something like a brushed stainless steel look to the cabinets and have it go "space age". There are specs of blue/gray in this counter top. The next think to look at is an "ashwood" or dark gray wood presentation that has some blue in it. It would lighten the space yet still add drama that dark cabinetry offers.

The other side of my kitchen will look like this (picture attached)

There are several companies such as AGL, Johnson, Baba, Kalinga etc that makes engineered quartz in India. The choices of colors they offer also quite extensive. The prices of these quartz are not that much higher than good quality granite. So visit one of these showrooms to get a touch and feel of these materials.

Hey, IKEA has some great choices in solid surface kitchen countertops. Since you are trying to choose the best material for your kitchen countertops, you can head over to the IKEA website to get help with your decision. There, you can browse the different kitchen countertop options available and compare them. Besides their ready-made countertops, you can also get customised ones, so that they can suit your requirements better.